Resa I'm not at the office but a search for microspheres should get you there Shay -----Original Message----- From: mems-talk-bounces@memsnet.org [mailto:mems-talk-bounces@memsnet.org] On Behalf Of Reza Rashidi Sent: Sunday, January 25, 2009 10:21 PM To: Brad Cantos; General MEMS discussion Subject: Re: [mems-talk] sealing cavity in capacitive pressure sensor Hi Brad, Thank you very much for your explanation. Just I searched precision glass sphere or bead, but I couldn't find a proper supplier. Do you know one to introduce it to me? Also, I used frit tape instead of paste. Do you think if I use glass frit paste it flows to the cavity due to high pressure and temperature? Best regards, Reza